fix: recursive data nesting guard + VM destroy in uninstall wizard

- Cleaned 242MB of recursive data/data/data/ nesting
- Added nesting-guard.js: auto-detects and removes recursive duplicates at startup
- Wired VM sandbox cleanup into uninstall wizard (calls vmDestroy before regular uninstall)
- Container stats, health data, and VM disk all cleaned on uninstall

dashcaddy-api/src/app.js

@@ -28,6 +28,7 @@ const auditLogger = require('./security/audit-logger');
 const portLockManager = require('./managers/port-lock-manager');
 const resourceMonitor = require('./managers/resource-monitor');
 const backupManager = require('./utilities/backup-manager');
+require("./utilities/nesting-guard")();
 const healthChecker = require('./monitoring/health-checker');
 const updateManager = require('./managers/update-manager');
 const selfUpdater = require('./docker/self-updater');

dashcaddy-api/src/utilities/i18n.js

@@ -135,6 +135,44 @@ const TRANSLATIONS = {
     'error.disk_full': 'Espace disque critique',
   },
 
+  zh: {
+    'dashboard.title': '仪表盘',
+    'dashboard.services': '服务',
+    'dashboard.containers': '容器',
+    'dashboard.health': '健康',
+    'dashboard.settings': '设置',
+    'dashboard.backups': '备份',
+    'dashboard.monitoring': '监控',
+    'dashboard.security': '安全',
+
+    'service.status.healthy': '健康',
+    'service.status.degraded': '降级',
+    'service.status.down': '宕机',
+    'service.status.unknown': '未知',
+    'service.status.pending': '待处理',
+
+    'action.start': '启动',
+    'action.stop': '停止',
+    'action.restart': '重启',
+    'action.delete': '删除',
+    'action.update': '更新',
+    'action.deploy': '部署',
+    'action.save': '保存',
+    'action.cancel': '取消',
+    'action.confirm': '确认',
+
+    'error.not_found': '未找到资源',
+    'error.unauthorized': '未授权',
+    'error.forbidden': '禁止访问',
+    'error.rate_limited': '请求过多',
+    'error.internal': '内部服务器错误',
+    'error.container_not_found': '未找到容器',
+    'error.service_not_found': '未找到服务',
+    'error.invalid_input': '输入无效',
+    'error.docker_unreachable': '无法连接 Docker 守护进程',
+    'error.disk_full': '磁盘空间严重不足',
+  },
+
   de: {
     'dashboard.title': 'Dashboard',
     'dashboard.services': 'Dienste',

dashcaddy-api/src/utilities/nesting-guard.js

@@ -0,0 +1,41 @@
+/**
+ * Recursive data nesting guard.
+ *
+ * In past versions, a buggy update/restore path created data/data/data/...
+ * directories — each containing a full recursive copy of the parent.
+ * This module runs at startup, detects and removes nested duplicates.
+ *
+ * Add to app.js: require('./utilities/nesting-guard')();
+ */
+
+const fs = require('fs');
+const path = require('path');
+const log = require('./logging');
+
+module.exports = function nestingGuard() {
+  try {
+    const dataDir = require('../config/paths').dataDir;
+    const dataDataPath = path.join(dataDir, 'data');
+
+    // If data/data exists, it's a recursive duplicate — remove it
+    if (fs.existsSync(dataDataPath)) {
+      const stat = fs.statSync(dataDataPath);
+      if (stat.isDirectory()) {
+        // Verify it's truly a duplicate (contains config.json like the parent)
+        const markerFile = path.join(dataDataPath, 'config.json');
+        const parentMarker = path.join(dataDir, 'config.json');
+        if (fs.existsSync(markerFile) && fs.existsSync(parentMarker)) {
+          const size = require('child_process')
+            .execSync(`du -sh '${dataDataPath}' 2>/dev/null | cut -f1`)
+            .toString().trim();
+          log.warn('startup', `Removing recursive data nesting: ${dataDataPath} (${size})`);
+          fs.rmSync(dataDataPath, { recursive: true, force: true });
+          log.info('startup', 'Recursive nesting removed');
+        }
+      }
+    }
+  } catch (e) {
+    // Non-fatal — don't crash startup over cleanup
+    log.warn('startup', `Nesting guard skipped: ${e.message}`);
+  }
+};